UNI-Thread 6/0 is a 136-denier continuous-filament polyester thread built for everyday fly tying. It provides more strength than 8/0 without the bulk of heavier threads, making it a versatile choice for dry flies, nymphs, wet flies, and small to medium streamers.

Its thin waxed finish improves material control while helping the thread lay flat and build clean, compact bodies and heads.

Performance

  • Denier: 136

  • Nominal breaking strength: 33 ounces

  • Spool length: 200 yards

  • Construction: Continuous-filament polyester

  • Finish: Waxed

When to choose 6/0

Choose 6/0 when you need an all-around tying thread with more strength than 8/0 but without excessive bulk. It is the UNI size for everyday trout flies, beadhead nymphs, larger dry flies, wet flies, and small to medium streamers where strength and controlled thread buildup both matter.

UNI-Thread 6/0 Fly Tying Thread

Regular price $4.50

1 review
By UNI

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UNI-Thread 6/0 is a 136-denier continuous-filament polyester thread built for everyday fly tying. It provides more strength than 8/0 without the bulk of heavier threads, making it a versatile choice for dry flies, nymphs, wet flies, and small to medium streamers.

Its thin waxed finish improves material control while helping the thread lay flat and build clean, compact bodies and heads.

Performance

  • Denier: 136

  • Nominal breaking strength: 33 ounces

  • Spool length: 200 yards

  • Construction: Continuous-filament polyester

  • Finish: Waxed

When to choose 6/0

Choose 6/0 when you need an all-around tying thread with more strength than 8/0 but without excessive bulk. It is the UNI size for everyday trout flies, beadhead nymphs, larger dry flies, wet flies, and small to medium streamers where strength and controlled thread buildup both matter.

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D
David F.
Pattern, hook size, technique, or application: Soft hackle and dry fly bodies.
UNI-Thread 8/0 is versatile for flies 10 through 18

UNI-Thread 8/0 is versatile for flies 10 through 18, with large assortment of vibrant colors. You can uncord it for wrapping smooth, tapered bodies, or spin it tight for holding down thick material. (I use UNI for my soft hackle bodies, as they are not as easily destroyed by trout teeth as floss.) Thanks, Feathercraft!